Person          
                  
                               · 
                    
            19th Century          
              
          
                
                            
            Person          
                  
                               · 
                    
            1897-          
              
              
          Cleaner and Crockery Attendant at ZSL London Zoo
                
                            
            Person          
                  
                               · 
                    
            fl 1833          
              
          
                
                            
            Person          
                  
                               · 
                    
            1924-          
              
              
          Helper at Sanatorium
                
                            
            Person          
                  
                               · 
                    
            fl 1949          
              
          
                
                            
            Person          
                  
                               · 
                    
            1923-          
              
              
          Junior Architectural Assistant
                
                            
            Person          
                  
                               · 
                    
            1902-          
              
              
          Clerk and Typist at ZSL London Zoo
                
                            
            Person          
                  
                               · 
                    
            1899-1972          
              
              
          Sir Gavin Rylands de Beer was a British evolutionary embryologist, known for his work on heterochrony as recorded in his 1930 book Embryos and Ancestors. He was director of the Natural History Museum, London, president of the Linnean Society of London, and a winner of the Royal Society's Darwin Medal for his studies on evolution
